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Finding the Fourth Proportional to 210,565.52, 290,554.96 and 119,921.68

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Solution

The fourth proportional to 210,565.52, 290,554.96 and 119,921.68 is: 165,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,565.52 : 290,554.96 = 119,921.68 : x
  2. Step 2: Convert to fraction form
    210,565.52/290,554.96 = 119,921.68/x
  3. Step 3: Cross multiply
    210,565.52x = 290,554.96 × 119,921.68
  4. Step 4: Simplify right side
    210,565.52x = 34,843,838,935.53
  5. Step 5: Solve for x
    x = 34,843,838,935.53/210,565.52
  6. Step 6: Final answer
    x = 165,477.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.